Videotek VTM-2000 Specifications Page 194

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Alarm Descriptions
VTM Series Installation and Operation Handbook
5-16
The MGT table activates the Repetition Error alarm when the appearance of the Master
Guide Table falls below the minimum repetition rate.
STT Repetition
The STT table activates the Repetition Error alarm when the appearance of the System
Time Table falls below the minimum repetition rate.
RRT Repetition
The RRT table activates the Repetition Error alarm when the appearance of the Rating
Region Table falls below the minimum repetition rate.
VCT Repetition
The VCT table activates the Repetition Error alarm when the appearance of the Virtual
Channel Table falls below the minimum repetition rate.
EIT Repetition
The EIT Error alarm activates when the appearance of the Event Information Table
falls below the minimum repetition rate.
Base PID Error
The Base PID Error alarm occurs when a table other than the following tables appear at
PID 0x1FFB: MGT, CVCTR, TVCT, STT, DCCT, DCC-SCT, and/or RRT. The table
IDs associated with these tables are 0xC7, 0xCD, 0xC4, 0xC8, 0xC9, 0xD3, or 0xD4.
Buffer Errors
The Buffer Errors alarm occurs when an underflow or an overflow of buffers occur in
the MPEG-2 reference decoder for the selected program (PROGRAM 1 through 6).
The buffers are the Transport Buffer (TB), Transport Buffer System Buffer (TBSB),
Multiplexing Buffer (MBB), Elementary Stream Buffer (EBB), Main Buffer (BB), and
PSI Input Buffer (BSB).
Empty Buffer Error
The Empty Buffer Error occurs when the Transport Buffer is not empty at least once
per second.
Data Delay Error
The Data Delay Error occurs when the data through the TSTD buffer is delayed for
more than one second. Also, the Data Delay Error can occur when a delay in the data
through the TSTD occurs for more than one minute.
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